Google has started to roll out a revised version of the Play Store with new UI and checkout process. Google is emphasising the ability to find and purchase content both quickly and easily. The new UI uses larger images and groups themed content together for better discovery.
The new Play Store is rolling out to Android smartphones and tablets running at least Android 2.2 (Froyo), which applies to most Xperia phones. Don’t expect to see it today, it could be a few weeks before you see it hit your part of the world.